diff --git a/src/dbp-qualified-signature-pdf-upload.js b/src/dbp-qualified-signature-pdf-upload.js
index 538e07e559d657fd3e60bbe4efd67eaef863bd7b..3af8304169aff6f6a830de25f132c00767836b79 100644
--- a/src/dbp-qualified-signature-pdf-upload.js
+++ b/src/dbp-qualified-signature-pdf-upload.js
@@ -735,7 +735,7 @@ class QualifiedSignaturePdfUpload extends ScopedElementsMixin(DBPSignatureLitEle
 
             #iframe {
                 width: 100%;
-                height: 240px;
+                height: 350px;
                 /* "overflow" should not be supported by browsers, but some seem to use it */
                 overflow: hidden;
                 border-width: 0;